Let $f ( x ) = 2 x ^ { 3 } - 15 x ^ { 2 } - 36 x - 2$

Multiple Choice

Let $f ( x ) = 2 x ^ { 3 } - 15 x ^ { 2 } - 36 x - 2$ Then ƒ has a point of inflection at x =

A) $- \frac { 1 } { 2 }$
B) -1
C) $\frac { 1 } { 2 }$
D) 1
E) $\frac { 5 } { 2 }$